/*

* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: Image handler for VImpstengine handler

*

*/

#ifndef __CVIMPSTENGINEIMAGEHANDLER_H

#define __CVIMPSTENGINEIMAGEHANDLER_H

//  INCLUDES

#include <e32base.h>

#include "mvimpstimageprocessobserver.h"

#include <mdaimageconverter.h>

// FORWARD DECLARATIONS           

class CVimpstImageProcessor;

class CFbsBitmap;

// CLASS DECLARATION

/**

 * This Class is wrapper over the CVimpstImageProcessor implements the processing of image

 * @lib vimpstengine.lib

 * @since S60 5.0 

 */

NONSHARABLE_CLASS( CVIMPSTEngineImageHandler ) : public CBase,							   

                                                 public MCAImageProcessObserver,

                                                 public MMdaImageUtilObserver

    {

    public:  // Two-phased constructors and destructor

        /**

         * Two-phased constructor.

         */

        IMPORT_C static CVIMPSTEngineImageHandler* NewL();

        /**

         * Two-phased constructor.

         */										

        IMPORT_C static CVIMPSTEngineImageHandler* NewLC();

        /**

         * By default Symbian 2nd phase constructor is private.

         */

        void ConstructL();

        /**

         * C++ Destructor.

         */

        virtual ~CVIMPSTEngineImageHandler();

    private:

        /**

         * default constructor

         */

        CVIMPSTEngineImageHandler();

public: //from MMdaImageUtilObserver

    /**

     * Defines required client behaviour when a create operation has completed.

     *

     * @param aError:A value identifying the status of the create operation. KErrNone or one of the system wide error codes.

     * 

     */

    void MiuoCreateComplete(TInt aError);

    /**

     * Defines required client behaviour when an open operation has completed.

     *

     * @param aError: A value identifying the status of the open operation. KErrNone or one of the system wide error codes

     */

    void MiuoOpenComplete(TInt aError);

    /**

     * Defines required client behaviour when a conversion, image rotation or image re-scaling operation has completed.

     *

     * @param aError: A value identifying the status of the operation. KErrNone or one of the system wide error codes.

     */

    void MiuoConvertComplete(TInt aError);

    public: 

        /**

         * process the image from file name

         * @return processed image content	     

         */

        IMPORT_C HBufC8* ProcessImageFromFileL(const TDesC& aFilename ,

                const  TDesC8& aMimetype);

        /**

         * process the image from image data

         * @return processed image content      

         */

        IMPORT_C HBufC8* ProcessImageFromDataL( const TDesC8& aImageData , const TDesC8& aMimeType);

        /**

         * process the image from image bitmap

         * @return processed image content      

         */

        IMPORT_C HBufC8* ProcessFromBitmapL( CFbsBitmap& aBitMap );

			 /**

        * Get Bitmap

        * @return bitmap

        */   

        IMPORT_C CFbsBitmap& Bitmap();

    public:  // from MCAImageProcessObserver

        /**

         * See MCAImageProcessObserver	     

         */

        void HandleProcessingCompleteL( TInt aStatus );	

    private:   	

        //Result code from waited request

        TInt    iReqResult;

        // Owns content

        HBufC8* iContent;

        // Owns imageporcessor

        CVimpstImageProcessor* iProcessor;

        // own active sheduler 

        CActiveSchedulerWait    iWait;

        /*

         * bitmap to descriptor pointer

         * Owns

         */

        CMdaImageBitmapToDescUtility* iToDesc;

        /*

         * image format

         */

        TMdaJfifClipFormat iFormat;

        /*

         * stores converted descriptor from bitmap

         * Doesn't Own: ownership is transferred to caller

         */

        HBufC8* iBuf;

        /*

         * stores error code

         */

        TInt iError;

    };

#endif      //__CVIMPSTENGINEIMAGEHANDLER_H

// End of File